TOYOTA AVALON 2001 Service Repair Manual

B09079
B09076
Fuel Hose
Clamp
S04508
Ohmmeter
4
5
S04509
4
5
Battery SF-8
- SFIFUEL PUMP
111 7 Author
: Date
:
2001 AVALON (RM808U)
(p) After checking fuel pressure, disconnect the negative (-)
terminal cable from the battery and carefully remove the
SST and fuel tube connector to prevent gasoline from
splashing.
SST 09268-41047, 09268-45014
(q) Reconnect the No.1 fuel pipe (fuel tube connector).
CAUTION:
Perform connecting operations of the tube connector
(quick type) after observing the precautions (See page
SF-1).
(r) Surely install the hose clamp to the fuel filter with ºclickº
sound.
(s) After installing the clamp, check that the clamp is fixed by
pulling up to the clamp.
(t) Reconnect the negative (-) terminal cable to the battery.
(u) Check for fuel leaks.
3. REMOVE REAR SEAT CUSHION
4. REMOVE FLOOR SERVICE HOLE COVER
5. DISCONNECT FUEL PUMP & SENDER GAUGE CON-
NECTOR
6. INSPECT FUEL PUMP RESISTANCE
Using an ohmmeter, measure the resistance between terminals
4 and 5.
Resistance: 0.2 - 3.0 W at 20°C (68°F)
If the resistance is not as specified, replace the fuel pump.
7. INSPECT FUEL PUMP OPERATION
Connect the positive (+) lead from the battery to terminal 4 of
the connector, and the negative (-) lead to terminal 5. Check
that the fuel pump operates.
NOTICE:

These tests must be done quickly (within 10 seconds)
to prevent the coil burning out.

Keep the fuel pump as far away from the battery as
possible.

Always do the switching at the battery side.

- SFIFUEL PUMP
SF-9
111 8 Author
: Date
:
2001 AVALON (RM808U)
If operation is not as specified, replace the fuel pump or lead
wire.
8. RECONNECT FUEL PUMP & SENDER GAUGE CON-
NECTOR
9. REINSTALL FLOOR SERVICE HOLE COVER
10. REINSTALL REAR SEAT CUSHION

SF0LH-01
SF-14
- SFIFUEL PUMP
1123 Author
: Date
:
2001 AVALON (RM808U)
REASSEMBLY
Installation is in the reverse order of disassembly (See page SF-12).

SF0LF-01
S04583
B02519
Vinyl Bag
- SFIFUEL PUMP
SF-1 1
1120 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
CAUTION:
Do not smoke or work near an open flame when working on
the fuel pump.
1. REMOVE REAR SEAT CUSHION
2. REMOVE FLOOR SERVICE HOLE COVER
(a) Take out the floor carpet.
(b) Remove the 5 screws and service hole cover.
HINT:
At the time of installation, please refer to the following items.
Check for fuel leakage.
3. DISCONNECT FUEL PUMP & SENDER GAUGE CON-
NECTOR
NOTICE:
Do not lift the fuel pump up with the wire harness picking.
4. REMOVE NO.1 FUEL TANK PROTECTOR
Remove the 2 bolts and No.1 fuel tank protector.
Torque: 4 N´m (40 kgf´cm, 35 in.´lbf)
5. DISCONNECT FUEL TUBE (FUEL TUBE CONNEC-
TOR)
CAUTION:

Perform disconnecting and connecting operations of
the fuel tube connector (quick type) after observing
the precautions (See page SF-1).

As there is retained pressure in the fuel pipe line, pre-
vent it from splashing inside the vehicle compart-
ment.
6. REMOVE FUEL PUMP ASSEMBLY FROM FUEL TANK
(a) Remove the 6 bolts and fuel tank vent tube set plate.
Torque: 4 N´m (40 kgf´cm, 35 in.´lbf)
(b) Pull out the fuel pump assembly.
(c) Remove the gasket from the pump assembly.
NOTICE:

Do not damage the fuel pump filter.

Be careful that the arm of the sender gauge should
not bent.
HINT:
At the time of installation, please refer to the following items.
Install a new gasket to the pump assembly.

SF105-02
B09136
Passenger's Seat
Heated Oxygen Sensor
Connector
(Bank 1 Sensor 2) Connector
for Seat
37 (375, 27)
Heated Oxygen Sensor
(Bank 1 Sensor 2)
Grommet
44 (450, 32)
: Specified torqueN´m (kgf´cm, ft´lbf)
Bench Seat TypeExcept Bench Seat Type
37 (375, 27)
SF-80
- SFIHEATED OXYGEN SENSOR
1189 Author
: Date
:
2001 AVALON (RM808U)
HEATED OXYGEN SENSOR
COMPONENTS

B09137
Ohmmeter
+BHT
SF106-02
- SFIHEATED OXYGEN SENSOR
SF-81
1190 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
INSPECT HEATER RESISTANCE OF HEATED OXYGEN
SENSOR (Bank 1 Sensor 2)
(a) Remove the passenger's seat.
(b) Disconnect the oxygen sensor connector.
(c) Using an ohmmeter, measure the resistance between the
terminals +B and HT.
Resistance:
At 20°C (68°F)11 - 16 W
At 800°C (1,472°F)23 - 32 W
If the resistance is not as specified, replace the sensor.
Torque: 44 N´m (450 kgf´cm, 32 ft´lbf)
(d) Reconnect the oxygen sensor connector.
(e) Reinstall the passenger's seat.

SF067-05
B09118

Gasket
Throttle Body
Water Bypass
HoseAir Assist
Hose
N´m (kgf´cm, ft´lbf)

Non-reusable part: Specified torque
29 (300, 22)
Air Cleaner Hose
w/ Resonator Vacuum Hose
Accelerator Cable
IAC Valve
GasketThrottle BodyThrottle Body
Bracket
Throttle
Position
Sensor
Connector
IAC Valve
Connector V-Bank Cover
Vacuum Hose
19.5 (200, 14)
Brake Booster
Vacuum Hose
Fuel Vapor
Feed Hose
Throttle Cable
SF-44
- SFIIDLE AIR CONTROL (IAC) VALVE
1153 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS

SF0ZX-01
B06692
Open
ValveClose SF-46
- SFIIDLE AIR CONTROL (IAC) VALVE
1155 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
INSPECT IAC VALVE OPERATION
(a) Check that the IAC valve is halfly opened.
(b) Connect the IAC valve connector to the IAC valve.
(c) Turn the ignition switch ON.
(d) Check that the IAC valve moves in 0.5 seconds by order
of fully close, fully open and halfly open.
If operation is not as specified, replace the IAC valve.
(e) Turn the ignition switch OFF.
(f) Disconnect the IAC valve connector from the IAC valve.

SF06A-01
- SFIIDLE AIR CONTROL (IAC) VALVE
SF-47
1156 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
Installation is in the reverse order of removal (See page SF-45).

SF0ZW-01
A07285
E1DLC1
SST
TE1
DLC1
A07285
E1DLC1SST
TE1
DLC1
B06684
Disconnect
Plug
Plug
- SFIIDLE AIR CONTROL (IAC) VALVE
SF-43
1152 Author
: Date
:
2001 AVALON (RM808U)
IDLE AIR CONTROL (IAC) VALVE
ON-VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:

Engine at normal operating temperature

Idle speed checked correctly

Transmission in neutral position

A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843-18020
(c) After engine speed is kept at approx. 1,000 rpm for 5 se-
conds, check that it returns to idle speed.
If the engine speed operation is not as specified, check the IAC
valve, wiring and ECM.
(d) Remove the SST from the DLC1.
SST 09843-18020
2. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:

Engine at normal operating temperature

Idle speed checked correctly

Transmission in neutral position

A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
(c) After engine speed is kept at 900 - 1,300 rpm for 10 se-
conds, check that it returns to idle speed.
(d) Stop the engine.
(e) Remove the V-bank cover.
(f) Disconnect the air assist hose from the air pipe, and block
off the IAC valve exit and the entry to the pipe.
(g) Start the engine and check that the idle speed reaches
500 rpm or below (the engine may stall).
If the idle does not reach 500 rpm or below, check for a leak be-
tween the air assist hoses, pipe and injectors.
(h) Remove the SST from the DLC1.
SST 09843-18020
(i) Reconnect the air assist hose to the air pipe.
(j) Reinstall the V-bank cover.